6. In the Access Control List add the email address of the person to whom you want to share these contacts:

6a. In case you want to remove the user to whom you delegated rights, click Remove button after the email address:

7. In the right box, select the rights you want to delegate to that user:a) Read – rights to read only in the contactsb) Write – rights to read and write in the contactsc) Admin – all rights – read, modify and delete contactsd) Custom – individual rights

8. When you have finished with the assignment of the users to their specific rights, you can save the settings: